One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,21,24)(19,26,27,32)(20,23,28,25)(22,29,31,30)(1,2,5,6)(3,7,4,8)(9,10)(11,15)(12,14)(13,16)(19,27)(22,31)(26,32)(29,30)(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,19,28,29,21,27,20,30)(18,22,23,32,24,31,25,26)(1,4,5,3)(2,7,6,8)(11,16)(13,15)(17,20,21,28)(18,23,24,25)(19,29,27,30)(22,26,31,32)(10,14)(13,15)(18,24)(19,27)(23,25)(29,30) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.